[PATCH 0/5] RFC: Fix bug 209

[David Gibson <david@gibson.dropbear.id.au>]

Here are a handful of changes to forwarding ant multicast handling,
that fix bug 209.  It also gets us closer to correct multicast
handling, though we're certainly not there yet - multicast things
currently only really work at all because IP_MULTICAST_ALL defaults to
on, and for the common protocols the host is likely to be already a
group member.

RFC, because a tmux change has broken the tests for me, and I wanted
to send this out before I sort out how to fix that.  I have run the
subset of tests covered by "make bats", which includes the podman
tests.

David Gibson (5):
  fwd: Clarify semantics of --host-lo-to-ns-lo
  udp: Validate that we have a unicast source address
  fwd: Rework default address logic for inbound flows
  fwd: Reorder DNAPT and SNAT steps in fwd_nat_from_host()
  fwd: Don't rewrite inbound multicast destinations

 conf.c     |  2 ++
 fwd.c      | 61 ++++++++++++++++++++++++++++++++++--------------------
 passt.1    |  9 ++++----
 udp_flow.c |  2 +-
 4 files changed, 46 insertions(+), 28 deletions(-)

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2.55.0